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Enhanced adsorption of tetracycline using modified second pyrolysis oil-based drill cutting ash

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Abstract

In this work, second pyrolysis oil-based drill cutting ash (OBDCA-sp) was modified using NaOH and cetyltrimethylammonium bromide (CTAB), respectively. The modified OBDCA-sp was used as the novel adsorbent for adsorption of tetracycline (TC) in aqueous solutions. The original and modified OBDCA-sp were characterized by SEM, XRD, FTIR, zeta potential analysis, contact angle, and BET. The maximum theoretical adsorption quantity (45 ℃) for TC was calculated as 1.7 mg/g using CTAB-OBDCA-sp as the adsorbent. The adsorption isotherm of TC on OBDCA-sp was fitted well with Freundlich model and the adsorption kinetic was illustrated by pseudo-second-order model. Neutral condition was favorable for the adsorption of TC. The result of regeneration experiment indicated the reusability of OBDCA-sp. The hydrogen bonding was the possible mechanism for TC adsorption. This paper developed the novel surface modification methods of OBDCA-sp and provided an approach for the resource utilization of OBDCA-sp as an environmental functional material.

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Acknowledgements

The authors would like to thank Shiyanjia Lab (www.shiyanjia.com) for the material characterization.

Funding

The authors are grateful for the support provided by the Study on Comprehensive Control of Rocky Desertification and Ecological Service Function Improvement in Karst Peaks (no. 2016YFC0502402); Fuling Shale Gas Environmental Exploration Technology of National Science and Technology Special Project (grant no. 2016ZX05060); and the National Natural Science Foundation of China (no. 51709254), and Youth Innovation Promotion Association, Chinese Academy of Sciences (no. 2020335).

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Writing — review and editing were performed by HY and ZD; supervision was performed by YZ and YL; funding acquisition was performed by YZ and SX.

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Correspondence to Shibin **a.

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Yang, H., Ding, Z., Zou, Y. et al. Enhanced adsorption of tetracycline using modified second pyrolysis oil-based drill cutting ash. Environ Sci Pollut Res 29, 81760–81776 (2022). https://doi.org/10.1007/s11356-022-21504-3

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  • DOI: https://doi.org/10.1007/s11356-022-21504-3

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